[squid-users] Configuring authentication with ldap_auth and two domains?

Repost, as the first never came through at my end.
Sorry if it's a dupe.

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Hi y'all.
I have searched through the docs, and cannot find
alot on ldap_auth. I use Squid + LDAP instead of
SMB to authenticate against our 2003 Server. The
problem is that we have two domains that I wish to
authenticate against. Is it possible to do this
with Squid and LDAP?
Here is my current method:
##################
auth_param basic program
/usr/lib/squid/ldap_auth -R -b
"dc=my,dc=domain,dc=org" -D
"cn=Administrator,cn=Users,dc=my,dc=domain,dc=org"
 -w "mypassword" -f sAMAccountName=%s -h
192.168.1.1
auth_param basic children 5
auth_param basic realm Our Proxy
auth_param basic credentialsttl 5 hours
acl localnet proxy_auth REQUIRED src
192.168.1.0/24  192.168.100.0/24
http_access allow localnet
http_access allow localhost
http_access deny all
###################
Is it possible to add another sub-domain into this
equation to authenticate against? Our two domains
are on the two networks listed above in localnet
ACL, although our sub-domains DC has an IP address
on both networks. I am not sure how to specify two
domains and two domain controller IP's in the
above.
Sorry if this is a n00b question. I am kinda stuck
and you seem to know alot about this field. And
tips, greatly received. Thanks in advance.
regards,
grolschie